netdev - [PATCH RFC 2/5] net:stmmac: fix rx buffer allocation.

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Message-ID: <1381937052-8999-3-git-send-email-jimmy.perchet@parrot.com>
Date:	Wed, 16 Oct 2013 17:24:09 +0200
From:	Jimmy Perchet <jimmy.perchet@...rot.com>
To:	<peppe.cavallaro@...com>
CC:	<netdev@...r.kernel.org>, Jimmy Perchet <jimmy.perchet@...rot.com>
Subject: [PATCH RFC 2/5] net:stmmac: fix rx buffer allocation.

Rx buffers used wrong size, because priv->dma_buf_sz was updated after allocation.

Signed-off-by: Jimmy Perchet <jimmy.perchet@...rot.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 170f043..0015175 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -998,6 +998,9 @@ static int init_dma_desc_rings(struct net_device *dev)
 	if (bfsize < BUF_SIZE_16KiB)
 		bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_buf_sz);
 
+	priv->dma_buf_sz = bfsize;
+	buf_sz = bfsize;
+
 	if (netif_msg_probe(priv))
 		pr_debug("%s: txsize %d, rxsize %d, bfsize %d\n", __func__,
 			 txsize, rxsize, bfsize);
@@ -1087,8 +1090,6 @@ static int init_dma_desc_rings(struct net_device *dev)
 	}
 	priv->cur_rx = 0;
 	priv->dirty_rx = (unsigned int)(i - rxsize);
-	priv->dma_buf_sz = bfsize;
-	buf_sz = bfsize;
 
 	/* Setup the chained descriptor addresses */
 	if (priv->mode == STMMAC_CHAIN_MODE) {
-- 
1.8.1.2

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